POLYESTER LUBRICANT FOR WORKING FLUIDS COMPRISING DIFLUOROMETHANE
    42.
    发明公开
    POLYESTER LUBRICANT FOR WORKING FLUIDS COMPRISING DIFLUOROMETHANE 审中-公开
    聚酯润滑剂有液体的工作二氟甲烷

    公开(公告)号:EP2814923A1

    公开(公告)日:2014-12-24

    申请号:EP13715023.1

    申请日:2013-02-14

    IPC分类号: C10M171/00 C10N40/30

    摘要: Mixtures of select neopentyl polyol esters are found to be highly miscible with the refrigerant R-32 over a wide temperature range. Working fluids are provided comprising R-32 and a lubricant containing these select neopentyl polyol esters and having a kinematic viscosity at 40° C. of 32 cSt or higher. Specifically, the lubricant composition of the invention comprises a mixture of alkylcarboxy esters of neopentyl polyols, wherein at least 10 wt % of all neopentyl polyol esters are esters of pentaerythritol oligomers of 4 or more pentaerythritol monomer groups, and wherein a majority of the alkylcarboxylate groups of the alkylcarboxy esters of neopentyl polyols are pentanoyl groups wherein at least 15% of the pentanoyl groups are branched.